/* Set the defaults for DataTables initialisation */
$.extend(true, $.fn.dataTable.defaults, {
  "sDom": "<'row'<'col-sm-6'l><'col-sm-6'f>r>" + "t"
      + "<'row'<'col-sm-6'i><'col-sm-6'p>>",
  "oLanguage": {
    "sLengthMenu": "每页 _MENU_ 条记录"
  }
});

/* Default class modification */
$.extend($.fn.dataTableExt.oStdClasses, {
  "sWrapper": "dataTables_wrapper form-inline",
  "sFilterInput": "form-control input-sm",
  "sLengthSelect": "form-control input-sm"
});

// In 1.10 we use the pagination renderers to draw the Bootstrap paging,
// rather than  custom plug-in
if ($.fn.dataTable.Api) {
  $.fn.dataTable.defaults.renderer = 'bootstrap';
  $.fn.dataTable.ext.renderer.pageButton.bootstrap = function (settings, host,
      idx, buttons, page, pages) {
    var api = new $.fn.dataTable.Api(settings);
    var classes = settings.oClasses;
    var lang = settings.oLanguage.oPaginate;
    var btnDisplay, btnClass;

    var attach = function (container, buttons) {
      var i, ien, node, button;
      var clickHandler = function (e) {
        e.preventDefault();
        if (e.data.action !== 'ellipsis') {
          api.page(e.data.action).draw(false);
        }
      };

      for (i = 0, ien = buttons.length; i < ien; i++) {
        button = buttons[i];

        if ($.isArray(button)) {
          attach(container, button);
        } else {
          btnDisplay = '';
          btnClass = '';

          switch (button) {
            case 'ellipsis':
              btnDisplay = '&hellip;';
              btnClass = 'disabled';
              break;

            case 'first':
              btnDisplay = lang.sFirst;
              btnClass = button + (page > 0 ?
                  '' : ' disabled');
              break;

            case 'previous':
              btnDisplay = lang.sPrevious;
              btnClass = button + (page > 0 ?
                  '' : ' disabled');
              break;

            case 'next':
              btnDisplay = lang.sNext;
              btnClass = button + (page < pages - 1 ?
                  '' : ' disabled');
              break;

            case 'last':
              btnDisplay = lang.sLast;
              btnClass = button + (page < pages - 1 ?
                  '' : ' disabled');
              break;

            default:
              btnDisplay = button + 1;
              btnClass = page === button ?
                  'active' : '';
              break;
          }

          if (btnDisplay) {
            node = $('<li>', {
              'class': classes.sPageButton + ' ' + btnClass,
              'aria-controls': settings.sTableId,
              'tabindex': settings.iTabIndex,
              'id': idx === 0 && typeof button === 'string' ? settings.sTableId
                  + '_' + button : null
            })
            .append($('<a>', {
                  'href': '#'
                })
                .html(btnDisplay)
            )
            .appendTo(container);

            settings.oApi._fnBindAction(
                node, {
                  action: button
                }, clickHandler
            );
          }
        }
      }
    };

    attach(
        $(host).empty().html('<ul class="pagination"/>').children('ul'),
        buttons
    );
  }
} else {
  // Integration for 1.9-
  $.fn.dataTable.defaults.sPaginationType = 'bootstrap';

  /* API method to get paging information */
  $.fn.dataTableExt.oApi.fnPagingInfo = function (oSettings) {
    return {
      "iStart": oSettings._iDisplayStart,
      "iEnd": oSettings.fnDisplayEnd(),
      "iLength": oSettings._iDisplayLength,
      "iTotal": oSettings.fnRecordsTotal(),
      "iFilteredTotal": oSettings.fnRecordsDisplay(),
      "iPage": oSettings._iDisplayLength === -1 ? 0 : Math.ceil(
          oSettings._iDisplayStart / oSettings._iDisplayLength),
      "iTotalPages": oSettings._iDisplayLength === -1 ? 0 : Math.ceil(
          oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)
    };
  };

  /* Bootstrap style pagination control */
  $.extend($.fn.dataTableExt.oPagination, {
    "bootstrap": {
      "fnInit": function (oSettings, nPaging, fnDraw) {
        var oLang = oSettings.oLanguage.oPaginate;
        var fnClickHandler = function (e) {
          e.preventDefault();
          if (oSettings.oApi._fnPageChange(oSettings, e.data.action)) {
            fnDraw(oSettings);
          }
        };

        $(nPaging).append(
            '<ul class="pagination">' +
            '<li class="prev disabled"><a href="#">&larr; ' + oLang.sPrevious
            + '</a></li>' +
            '<li class="next disabled"><a href="#">' + oLang.sNext
            + ' &rarr; </a></li>' +
            '</ul>'
        );
        var els = $('a', nPaging);
        $(els[0]).bind('click.DT', {
          action: "previous"
        }, fnClickHandler);
        $(els[1]).bind('click.DT', {
          action: "next"
        }, fnClickHandler);
      },

      "fnUpdate": function (oSettings, fnDraw) {
        var iListLength = 5;
        var oPaging = oSettings.oInstance.fnPagingInfo();
        var an = oSettings.aanFeatures.p;
        var i, ien, j, sClass, iStart, iEnd,
            iHalf = Math.floor(iListLength / 2);

        if (oPaging.iTotalPages < iListLength) {
          iStart = 1;
          iEnd = oPaging.iTotalPages;
        } else if (oPaging.iPage <= iHalf) {
          iStart = 1;
          iEnd = iListLength;
        } else if (oPaging.iPage >= (oPaging.iTotalPages - iHalf)) {
          iStart = oPaging.iTotalPages - iListLength + 1;
          iEnd = oPaging.iTotalPages;
        } else {
          iStart = oPaging.iPage - iHalf + 1;
          iEnd = iStart + iListLength - 1;
        }

        for (i = 0, ien = an.length; i < ien; i++) {
          // Remove the middle elements
          $('li:gt(0)', an[i]).filter(':not(:last)').remove();

          // Add the new list items and their event handlers
          for (j = iStart; j <= iEnd; j++) {
            sClass = (j == oPaging.iPage + 1) ? 'class="active"' : '';
            $('<li ' + sClass + '><a href="#">' + j + '</a></li>')
            .insertBefore($('li:last', an[i])[0])
            .bind('click', function (e) {
              e.preventDefault();
              oSettings._iDisplayStart = (parseInt($('a', this).text(), 10) - 1)
                  * oPaging.iLength;
              fnDraw(oSettings);
            });
          }

          // Add / remove disabled classes from the static elements
          if (oPaging.iPage === 0) {
            $('li:first', an[i]).addClass('disabled');
          } else {
            $('li:first', an[i]).removeClass('disabled');
          }

          if (oPaging.iPage === oPaging.iTotalPages - 1 || oPaging.iTotalPages
              === 0) {
            $('li:last', an[i]).addClass('disabled');
          } else {
            $('li:last', an[i]).removeClass('disabled');
          }
        }
      }
    }
  });
}

/*
 * TableTools Bootstrap compatibility
 * Required TableTools 2.1+
 */
if ($.fn.DataTable.TableTools) {
  // Set the classes that TableTools uses to something suitable for Bootstrap
  $.extend(true, $.fn.DataTable.TableTools.classes, {
    "container": "DTTT btn-group",
    "buttons": {
      "normal": "btn btn-default",
      "disabled": "disabled"
    },
    "collection": {
      "container": "DTTT_dropdown dropdown-menu",
      "buttons": {
        "normal": "",
        "disabled": "disabled"
      }
    },
    "print": {
      "info": "DTTT_print_info modal"
    },
    "select": {
      "row": "active"
    }
  });

  // Have the collection use a bootstrap compatible dropdown
  $.extend(true, $.fn.DataTable.TableTools.DEFAULTS.oTags, {
    "collection": {
      "container": "ul",
      "button": "li",
      "liner": "a"
    }
  });
}
